Question

a gas is evolved when nitric acid is added to egg shells .the name of the gas and its nature(acidic/basic/neutral

Answer 1

Answer:

CaCO3+HNO3=CaNO3+CO2+H20

CO2=acidic gas

Answer 2

Let us look at the answer:

Explanation:

Egg shells contain calcium carbonate. (CaCO₃)

When nitric acid (HNO₃) is added to egg shells i.e. CaCO₃ it produces calcium nitrate, carbon dioxide and water.

  CaCO₃ +HNO₃   ------------> Ca(NO₃)₂ +CO₂ + H₂O

The gas liberated is carbon dioxide CO₂ which is acidic in nature.

carbon dioxide forms various acids,  like carbonic acid, H₂CO₃